-89.93% is the change from 904 to 91
Calculation steps:
[( 91 - 904 ) ÷ 904] x 100 = -89.93%
Formula
Percentage change = [(91 - 904) / 904] x 100
Subtract the new number by the original number
91 - 904 = -813
-813 ÷ 904 = -0.8993362831858407
-0.8993362831858407 x 100 = -89.93%